(the full acronym is useful kinetic energy coefficient and is written коэффициент полезной деятельности, or к.п.д. in Russian):
the amount of useful activity or work output a person can achieve in a given amount of time
the amount of useful activity or work output a person can achieve in a given amount of time
by Sexydimma July 29, 2014

(the full acronym is useful kinetic energy coefficient and is written коэффициент полезной деятельности, or к.п.д. in Russian):
the amount of useful activity or work output a person can achieve in a given amount of time
the amount of useful activity or work output a person can achieve in a given amount of time
by Sexydimma February 08, 2017
